Species: Toøyd flatigle (Helobdella stagnalis)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Arkavatnet | Rogaland, Norway | 2 | 1 | 0 | 1992-09-22 | |
| Bergvikvatnet | Nordland, Norway | 1 | 1 | 0 | 1990-09-04 | |
| Frøylandsvatnet | Rogaland, Norway | 4 | 1 | 0 | 1993-06-01 | |
| Gravdalsvatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-18 | |
| Harestuvannet | Akershus, Norway | 3 | 1 | 0 | 1992-06-12 | |
| Hjørungdalsvatnet | Møre og Romsdal, Norway | 3 | 1 | 0 | 1993-06-11 | |
| Husavatnet | Vestland, Norway | 3 | 1 | 0 | 1993-06-04 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 1992-09-17 | |
| Kjemsjøen | Innlandet, Norway | 1 | 1 | 0 | 1991-09-05 | |
| Kolbjørnviksjøen | Østfold, Norway | 1 | 1 | 0 | 1990-08-29 | |
| Langavatnet | Vestland, Norway | 1 | 1 | 0 | 1989-08-31 | |
| Langvatnet, Tromsøya | Troms, Norway | 1 | 1 | 0 | 2014-09-02 | |
| Lianvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-27 | |
| Lille luktvann | Nordland, Norway | 1 | 1 | 0 | 1991-09-25 | |
| Litlvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1999-09-20 | |
| Longvatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-06-01 | |
| Madsvannet | Nordland, Norway | 1 | 1 | 0 | 1990-09-22 | |
| Mildevatnet | Vestland, Norway | 1 | 1 | 0 | 2004-10-27 | |
| Moensvatnet | Vestland, Norway | 2 | 1 | 0 | 1992-10-29 | |
| Molbekktjernet | Østfold, Norway | 1 | 1 | 0 | 1990-09-13 | |
| Myravatnet | Vestland, Norway | 2 | 1 | 0 | 1990-09-10 | |
| Norheimsskogen og området rundt skolen | Rogaland, Norway | 1 | 1 | 0 | 2013-08-22 | |
| Opsangervatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-25 | |
| Prestvatn | Agder, Norway | 1 | 1 | 0 | 1992-09-11 | |
| Rossevatn | Rogaland, Norway | 4 | 1 | 0 | 1993-05-25 | |
| Rundvannet | Troms, Norway | 3 | 1 | 0 | 1992-09-03 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Skarvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Skjelbreidvatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Stavsjø | Innlandet, Norway | 5 | 1 | 0 | 1991-10-17 | |
| Stensrudtjern | Oslo, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Svartaholtjørnet | Vestland, Norway | 1 | 1 | 0 | 1990-05-22 | |
| Tornesvatnet | Rogaland, Norway | 2 | 1 | 0 | 1990-09-27 | |
| Tretjønnet | Agder, Norway | 1 | 1 | 0 | 1990-06-26 | |
| Tussvatnet | Nordland, Norway | 2 | 1 | 0 | 1990-06-07 | |
| Vålåsjøen | Innlandet, Norway | 1 | 1 | 0 | 1989-08-24 | |
| Øvre Storfjordvatnet | Nordland, Norway | 2 | 1 | 0 | 1990-05-29 | |
| Årungen | Akershus, Norway | 1 | 1 | 0 | 1991-09-16 | |
| Åstveitvannet | Vestland, Norway | 1 | 1 | 0 | 1989-09-07 |
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